Entradas de registro específicas do usuário.
do MS :
"With the hive registry, each time a new user logs on, a new directory is created for that user with a separate file for the user registry. This is called the user profile hive. A user's hive contains specific registry information pertaining to that user's applications, desktop, environment, network connections, and printer settings. The user profile hive contains all data under the HKEY_CURRENT_USER key. When the current user is logged off and another user is logged on, the new user's hive is mounted, and the data under HKEY_CURRENT_USER changes."
HTH